Adjustable carriage for saw-mills



(No Model.) 2 Sheets-Sheet 1.

G. STRONG.

ADJUSTABLE CARRIAGE FOR SAW MILLS.

No. 358,899. Patented Mar. 8, 1887.

ATT T dlnwwmvmwm 2 Sheets-Sheet 2.

(No Model.)

G. STRONG.

ADJUSTABLE CARRIAGE FOR SAW MILLS.

Patented Mar. 8, 1887.

WWW: 1 i? 2% INVENTOR- UNITED STATES PATENT OFFICE.

GEORGE STRONG, OF SOUTH ROOKWOOD, MICHIGAN.

ADJUSTABLE CARRIAGE FOR SAW-MILLS.

SPECIFICATION forming part of LettersI-atent No. 358,899, dated March 8,1887.

Application tiled Augustll, 1886. Serial No. 209,922. (No model.)

To all whom it may concern.-

Be it known that I,Gno12en STRONG, of the village of South Rockwood, inthe county of Monroe and State of Michigan, have invented new and usefulImprovements in Adjustable Carriages for Saw-Mills 5 and I declare thefollowing to be a full, clear, and exact dcscription of my presentinvention, and one that will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention relates to carriages for sawmills, and to those which aredesigned more especially for cutting stave-bolts.

The following is a description of my improvement, which will be fullyunderstood, when taken in connection with the annexed drawings, in whichFigure I is a perspective view of the ma chine, showing the carriage inposition for making a perpendicular cut. Fig. 2 is a side elevationshowing the carriage in position for cutting radially with respect tothe center of the log or bolt. Fig. 3 is a cross-section of one of thearms O and its knee. Fig. 4 shows the end of a log or bolt havingparallel cuts, and Fig. 5 is a similar view of a bolt as cut by myimprovement.

Referring to the annexed drawings by lotter, A designates the travelingplatform, to which is attached an adjustable carriage.

B B designate the standards, which afford journal-bearings for ahorizontal shaft, F, to which are secured the arms 0 O of a carriage,upon which arms are movable knees D. These knees are suitably guided ontheir arms, and to their bases are secured racks a, with the teeth ofwhich engage spur-wheels II, that are keyed on a transverse shaft, E,the ends of which have their bearings in said arms 0 C.

At or near the middle of the length of the shaft E is keyed aspur-wheel, I, with which engages a pawl that is pivoted to ahand-lever, N, which is applied to vibrate on shaft E. \Vhen the saidpawl is engaged with the wheel I and the lever N vibrates, the knees D Dwill be moved forward and the stuff fed up to the saw f. Each knee D isprovided with a dog, P, for properly holding the stuff upon the arms 0O. The arms 0 O are rigidly connected together by transverse bars G G,to the latter one of which is secured cars a, and to these cars asegmental rack, K, is pivoted, which is vertically movable in aguideway, z, in one of the beams of the platform A. The teeth of therack K engage with aspur-wheel, J, which is keyed on a shaft, R, that isjournaled in the crossbeams S S of the platform A, andon one end of theshaft R is secured a hand-lever, M, provided with a pawl which engageswith notches d in a sectoryL, which is secured to the platform A. Bythese means the arms 0 O can be adjusted and secured in differentplanes, as indicated by the aid of dotted line 1 1 on Fig. 2. Theplatform A is mounted on wheels 6, which are guided by rails securedupon. tracks T.

The machine above described is designed for cutting staves in suchmanner that there will be no staves known as wash board staves. logsinto lengths suitable for stave-lengths. These are put one at a time onthe carriage when in'thc horizontal position shown in Fig. 1, in whichposition the perpendicular cut is made. After the log is thus cut onehalf is placed on the carriage wit-h its smooth face down, as indicatedin Fig. 2.

It will be observed that the bolts are not cut squarely through the log,as in Fig. 4, but on an angle, as shown in Figs. 2 and 5, the differentangles being obtained by raising or lowering the back end of thecarriage, as above described.

Having described my invention, I claim- The combination, with theconnected vibrating arms 0, provided with knees adjustable, asdescribed, of the traveling platform A, the segmental rack K, pivoted tothe rear cross-bar of said arms and guided below, the spur-wheel J,engaging with said rack, thehandlever on the shaft of said wheelprovided with a pawl, and the notched sector L, with which the pawlengages, all substantially as and for the purposes described.

In practice it is designed to cut the In testimony that I claim theabove I have hereunto set my hand and affixed my signature, in presenceof two witnesses,at Detroit, Michigan, this 30th day of July, A. D.1886.

GEORGE STRONG. In presence of- G. WV. Hays, ABRAM VAN VRANKEN.

